42543411 has 4 divisors (see below), whose sum is σ = 56724552. Its totient is φ = 28362272.

The previous prime is 42543409. The next prime is 42543419. The reversal of 42543411 is 11434524.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42543411 - 2¹ = 42543409 is a prime.

It is a super-3 number, since 3×42543411³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42543419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7090566 + ... + 7090571.

It is an arithmetic number, because the mean of its divisors is an integer number (14181138).

Almost surely, 2^42543411 is an apocalyptic number.

42543411 is a deficient number, since it is larger than the sum of its proper divisors (14181141).

42543411 is a wasteful number, since it uses less digits than its factorization.

42543411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14181140.

The product of its digits is 1920, while the sum is 24.

The square root of 42543411 is about 6522.5310271397. The cubic root of 42543411 is about 349.0953809192.

Adding to 42543411 its reverse (11434524), we get a palindrome (53977935).

The spelling of 42543411 in words is "forty-two million, five hundred forty-three thousand, four hundred eleven".